Sgt. McDonald was one of the five Philadelphia police officers killed in the last 13 months. He was fatally shot on September 23rd during traffic stop in North Philadelphia.
Monday night, Sgt. Timothy Simpson was killed when his police cruiser was struck in the Port Richmond section of the city. The driver of that car may have been under the influence.
The death of Sgt. Simpson taps into the pain the McDonald's feel every day.
"I'm picturing in my mind, over and over again, the exact details of our son's death," said Larry McDonald. "It takes me to a place of anger and frustration. Please, let this stop."
The McDonald's try to focus on good memories of thier son. He was an avid body builder, a long time football player, and a proud member of highway patrol.
But Patrick was a bachelor, and his father worries Monday night's tragedy will be harder on Sgt. Simpson's family.
He was married with three children.
"I feel lucky that me and my wife can handle this. That this poor woman and her children have to go through this," Larry McDonald said.For now, the McDonalds say they're ready to help the Simpson family with anything they may need in this difficult time. "God bless the Simpson family," said Sgt. McDonald's father Larry. "They're in our thoughts and prayers. And if there's anything the McDonald family can do, we'll be there."